Github user Leemoonsoo commented on the pull request:
https://github.com/apache/incubator-zeppelin/pull/77#issuecomment-104466637
@vgmartinez Thanks for the feedback.
The exception is coming from terminating interpreter process.
Zeppelin first tries terminate interpreter process gracefully and if it
does not work, it kills the process.
The exception has been thrown during the process of terminating interpreter
process.
So, i think the exception is okay, at least in this PR's scope. we can
create separate issue if we want to make process terminate gracefully with exit
code 0.
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